The Importance of Engine Filtration

Compared to microscopic dirt particles, your engine is a Goliath, roaring with heat and energy as it converts raw fuel into horsepower. But despite all this power, your engine is extremely vulnerable to the threat of microscopic engine dirt. In fact, if unchecked, this tiny menace will dramatically erode your engine's performance and can eventually cripple it beyond repair.


Engine Wear - Automotive experts agree that dirt is the number one cause of engine wear. At first glance, it does not seem possible. Engine dirt particles are so small- mere dust specs- and an engine is a highly sophisticated piece of machinery, crafted from the most durable metal alloys. How can these minute particles bring down such a high-tech giant? The answer lies in the fact that dirt particles are extremely abrasive. They consist of razor-like flakes of road dust and airborne grit drawn into the engine through the air intake, as well as manufacturing scarf and wear metal particles generated inside the engine. These particles are carried by the oil into the precision clearances between bearings and other moving parts. Once they work in between these parts, they grind and gouge surfaces, altering clearances, and generating more abrasive debris. As this wear cycle continues, precision components become progressively sloppy and fatigued until they fail altogether.

Oil Degradation - In addition to physically assaulting engine components, dirt and other contaminants work to degrade the oil that provides vital engine lubrication. Sooty particles generated during combustion can be forced past piston rings and into the oil. These particles act like tiny sponges, absorbing critical additives and shortening oil life. Soot also wreaks havoc with viscosity by causing oil to thicken. And in the presence of moisture, common by-products of combustion will react chemically to produce corrosive and rust-producing acids.


AMSOIL Oil and Air Filters - Filtration is the key to preventing costly repairs caused by engine dirt. Filtration is simply a method of removing contaminants by trapping and holding them outside the system of oil circulation. In order for filtration to be truly effective, however, it must be able to capture contaminants of all types and sizes.

AMSOIL has developed a complete line of sophisticated filtration products designed to offer the best protection available against virtually all harmful engine contaminants. With an AMSOIL Absolute Efficiency Filter, an AMSOIL Absolute Efficiency Oil Filter and an AMSOIL By-Pass Oil Filter, your engine can run long and hard with outstanding protection against engine dirt.

AMSOIL Ea Oil Filters (EaO)
Made with premium-grade full synthetic media. Ea Oil Filters feature advanced full synthetic nanofiber technology, making them the highest efficiency filters that are available for the auto/light truck market. AMSOIL EaO Filters are guaranteed for 25,000 miles or one year, whichever comes first, when used in conjunction with AMSOIL Synthetic Motor Oil in gasoline and diesel vehicles in normal service, 15,000 miles in severe service.

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Absolute Efficiency
AMSOIL Ea Oil Filters have the best efficiency rating in the industry. EaO Filters provide a filtering efficiency in accordance with industry standard ISO 4548-12 of 98.7 percent at 15 microns, while competitive filters containing conventional cellulose medias range from 40 to 80 percent efficiency.

Less Restriction
AMSOIL Ea Oil Filters have significantly lower restriction than conventional cellulose media filters. Their small synthetic nanofibers trap smaller particles and hold more contaminants, resulting in lower restriction. During cold temperature warm-up periods, an EaO lube filter allows the oil to easily flow through the filter compared to a typical cellulose filter. Lower restriction decreases engine wear.

More Capacity
A filterís capacity refers to the amount of contaminants it can hold and still remain effective. AMSOIL EaO Filters have a far greater capacity than competing filter lines. When used in conjunction with AMSOIL synthetic motor oils in normal service, EaO Filters are guaranteed to remain effective for 25,000 miles or one year, whichever comes first.

Superior Construction
AMSOIL Ea Oil Filters are made with premium-grade full synthetic media. The strictly controlled processing of this media ensures accurate filter construction, and is what allows Ea Oil Filters to deliver higher capacity and efficiency along with better durability.

Over the service life of a conventional cellulose filter, hot oil will degrade the resins that bind the media. The Ea Oil Filtersí full synthetic media technology is resin-free. It uses a wire screen backing that is pleated with the media for superior strength.

Ea Oil Filters are constructed with HNBR nitrile gaskets that are fully tested to extreme distances in numerous severe environments. The filters also feature fully tucked seams, a molded element seal, roll-formed threads and a long-lasting premium-grade silicone anti-drain valve.

AMSOIL Ea Oil Filters provide superior oil filtration for vehicles in the auto/light truck market.

Service Life
AMSOIL Ea Oil Filters are guaranteed for 25,000 miles or one year, whichever comes first, when used in conjunction with AMSOIL Synthetic Motor Oil. AMSOIL recommends changing the oil filter at the time of oil change.

If used in conjunction with AMSOIL Motor Oil that is being changed at intervals less than 25,000 miles, the EaO Filter should be changed at the same time. AMSOIL EaO Filters are not guaranteed for 25,000 miles when used with any oil other than AMSOIL Motor Oil and should be changed according to vehicle OEM recommendations.

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Absolute Protection from Engine Dirt

Assurance of Analytically Clean Oil

WHY ANOTHER FILTER? Even the best full flow-filter can't do it all.

Any full flow filter must allow oil to pass through it quickly to keep the engine from starving for oil. Advances in auto technology and more compact engine designs place increasing demands on these filters; to keep from creating a circulation bottleneck they filter out only the coarser particles, and feature relief valves that open when the engines demand for lubrication can't be ignored.

But the smallest grit that passes through- road dust, manufacturing scarf, and engine metal-flake in the 5-20 micron range - accounts for up to 60% of all engine wear. These microscopic particles closely match the precision clearances between critical engine components; they can enter the spaces between bearings, rings, and other components, to damage metal surfaces, altering tolerances, fatiguing components and generating additional debris.

Automobile engines are also susceptible to damage related to water formation, something a full flow filter is powerless against. Water enters the oil either as blowby combustion product of fuel ignition, or as condensed moisture from air drawn into the engine through the air intake. Water causes metal surfaces to rust; it also reacts with other blowby contaminants to produce corrosive acids that attack the engine, contributing to further friction, wear, debris, and oil degradation.

The AMSOIL Solution- By-Pass Filtration

Unlike a full-flow filter, the AMSOIL By-Pass Filter is situated outside of the main line of oil circulation; it taps into the line to bleed off and clean only a portion of the oil at a time. The AMSOIL By-Pass Filter retains the oil longer and does a more thorough job of removing contaminants without obstructing flow. You still need a full-flow filter, of course, because oil must circulate continuously. But with an AMSOIL By-Pass Filter drawing 10% of your system's capacity, all the oil in a six-quart system will be filtered to analytical purity in about five minutes, at an average engine speed equivalent to 45 mph.

The differences between the AMSOIL By-Pass Filters and others are the unique design of the filtering media and the patented construction of the filter element. Our high-capacity filtration medium is a special blend of virgin wood and cotton fibers formed into disc, stacked, and compressed. The center tube is all-steel, perforated for oil flow and wrapped with a fine mesh cotton screen. All dirt particles down to one-tenth of a micron in size are trapped, and the medium's thirsty cellulose fibers can remove up to a pint of water. Channeling is eliminated with the inclusion of a hydraulic follower plate activated by a sophisticated internal pressure system.

The AMSOIL Dual-Remote Oil Filtration System- For Optimum OIL FILTRATION and Maximum SERVICE ACCESSIBILITY

The AMSOIL Dual Remote Oil Filtration System replaces the standard full-flow system with a combination full-flow/by-pass system using a remote mounting assembly.

The mount couples an AMSOIL Full Flow Oil Filter with an AMSOIL Spin-On By-Pass Filter; it takes oil from the engine and returns it without the use of multiple fittings or extra return holes in the oil pan or valve cover. The mount and filters are installed in an accessible area of the engine compartment.

A specially-manufactured, spin-on casting with threading adapters is simply screwed onto the engine block's filter nipple, replacing the old full-flow filter. In-and-out ports in the casting and two flexible oil lines connect this adapter to the remote mount.

Remote placement of the filtration units allows larger oil filters to be used, and increases sump capacity - dramatically extending the oil's useful service life and protecting your wise investment in AMSOIL Synthetic Motor Oil. The recommended replacement interval for the AMSOIL By-Pass Oil Filter is 25,000 miles or one year (whichever comes first).

Once the Dual-Remote Filtration System is installed if you elect to use oil analysis testing then you DO NOT need to change your engine oil unless oil analysis testing results indicates you need to. Test samples are easily pulled from the dipstick tube with an AMSOIL pump into a 3 oz bottle and then put into a postage paid box mailed to Oil Analyzers Inc. This is typically performed every 20,000 miles or every year, whichever comes first for passenger vehicles and light duty trucks. You may very well travel  a very long mileage distance without needing to change you oil when using oil analysis testing. It really is a simple process and provides an accurate analysis of your engine's internal condition. Oil analysis testing is common practice with commercial, fleets and heavy-diesel equipment that you can put to use for your benefit as well.

AMSOIL is the undisputed leader in synthetics.............